PHP HTML HiddenField
From w3cyberlearnings
Contents |
HTML input tag with the type hidden is very important for passing information from and to the web page.
<input type="hidden" name="name" value="the value"/>
Note
Hidden field does not display on a web browser, but its value can be discovered by viewing the HTML source. It is a very bad idea to pass password or any important information through the hidden field.
Example 1
<?php
if ($_POST) {
print_r($_POST);
}
?>
<html>
<head>
<title>Hidden Field</title>
</head>
<body>
<form method="post" action="<?php echo $_SERVER['PHP_SELF'] ?>">
<table border="0">
<tr><td>Name:</td><td><input type="text" name="name" size="20"/></td></tr>
<tr><td>Country:</td><td><input type="text" name="country" size="30" /></td></tr>
<tr><td colspan="2"><input type="submit" value="submit" /></td></tr>
</table>
<input type="hidden" name="special_code" value="4762043656x42yJe245" />
</form>
</body>
</html>
Output
Example 2
<?php
// process user input
if (!empty($_POST['name']) && !empty($_POST['country'])) {
$greeting = "Hello! "
. ucfirst($_POST['name'])
. ', you are from '
. ucfirst($_POST['country']);
$greeting .= ', your special code is (hidden field) '
. $_POST['special_code'];
} else {
$greeting = 'please enter your name and your home country!<br/>';
}
?>
<html>
<head>
<title>Hidden Field</title>
</head>
<body>
<b><?php echo $greeting; ?></b>
<form method="post" action="<?php echo $_SERVER['PHP_SELF'] ?>">
<table border="0">
<tr><td>Name:</td><td><input type="text" name="name" size="20"/></td></tr>
<tr><td>Country:</td><td><input type="text" name="country" size="30" /></td></tr>
<tr><td colspan="2"><input type="submit" value="submit" /></td></tr>
</table>
<input type="hidden" name="special_code" value="4762043656x42yJe245" />
</form>
</body>
</html>
Output
Related Links
- HTML Hidden Field
- HiddenField Multiple Pages
- HTML Password
